- A
SSH into the VM and run `ping 10.1.2.3` to test connectivity.
Why wrong: Ping tests actual connectivity but doesn't explain WHY connectivity fails if it does. Network Intelligence Center shows the specific hop, firewall rule, or routing issue causing the failure.
- B
Use Network Intelligence Center Connectivity Tests to analyze the path from the VM to the on-premises IP.
Connectivity Tests simulate the network path, checking all routing tables, firewall rules, and VPN configurations. It identifies exactly where and why connectivity is blocked without requiring actual test traffic.
- C
Review Cloud VPN tunnel metrics in Cloud Monitoring for packet loss.
Why wrong: VPN metrics show overall tunnel health (tunnel state, bytes transferred) but don't verify specific destination reachability or identify routing/firewall issues for a particular IP.
- D
Run `gcloud compute routes list` to verify the route to 10.1.2.3 exists.
Why wrong: Listing routes shows configured routes but doesn't test whether the full path works end-to-end (VPN policies, on-premises firewall, BGP advertisements may all affect actual reachability).
Quick Answer
The answer is Network Intelligence Center Connectivity Tests, which is the correct choice because it allows you to test connectivity to on-premises over Cloud VPN by analyzing the entire network path from a specific Compute Engine VM source to the on-premises server IP 10.1.2.3. This tool validates routing, firewall rules, and tunnel health without requiring SSH access or generating live traffic, making it ideal when the VPN tunnel appears UP but you suspect a routing misconfiguration. On the Google Associate Cloud Engineer exam, this question tests your ability to choose a diagnostic tool over manual methods like ping or traceroute, which may fail due to firewall restrictions or asymmetric routing. A common trap is selecting gcloud compute ssh or Cloud Monitoring, but remember that Connectivity Tests is purpose-built for hybrid network path analysis. Memory tip: think "Path Check, Not Ping" — Connectivity Tests traces the logical route, not just reachability.
Google ACE Practice Question: Ensuring successful operation of a cloud solution
This ACE practice question tests your understanding of ensuring successful operation of a cloud solution. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You need to verify that a Compute Engine VM in `us-central1` can reach an on-premises server at IP `10.1.2.3` over a Cloud VPN connection. The VPN tunnel appears UP but you're unsure if routing is correct. Which GCP tool can test this connectivity?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use Network Intelligence Center Connectivity Tests to analyze the path from the VM to the on-premises IP.
B is correct because Network Intelligence Center Connectivity Tests can analyze the path from a specific source (the Compute Engine VM) to a destination (the on-premises server IP 10.1.2.3) across hybrid connectivity like Cloud VPN. It validates routing, firewall rules, and tunnel health without requiring you to SSH into the VM or run live traffic, making it ideal for diagnosing routing issues when the VPN tunnel is UP but connectivity is uncertain.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SSH into the VM and run `ping 10.1.2.3` to test connectivity.
Why it's wrong here
Ping tests actual connectivity but doesn't explain WHY connectivity fails if it does. Network Intelligence Center shows the specific hop, firewall rule, or routing issue causing the failure.
- ✓
Use Network Intelligence Center Connectivity Tests to analyze the path from the VM to the on-premises IP.
Why this is correct
Connectivity Tests simulate the network path, checking all routing tables, firewall rules, and VPN configurations. It identifies exactly where and why connectivity is blocked without requiring actual test traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Review Cloud VPN tunnel metrics in Cloud Monitoring for packet loss.
- ✗
Run `gcloud compute routes list` to verify the route to 10.1.2.3 exists.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume a live ping from the VM (Option A) is the simplest test, but the question specifically asks for a tool to verify if routing is correct, not just connectivity — and Connectivity Tests provides a detailed path analysis without requiring VM access or generating live traffic.
Trap categories for this question
Command / output trap
Ping tests actual connectivity but doesn't explain WHY connectivity fails if it does. Network Intelligence Center shows the specific hop, firewall rule, or routing issue causing the failure.
Detailed technical explanation
How to think about this question
Network Intelligence Center Connectivity Tests uses a simulated packet walkthrough that checks VPC firewall rules, routes (including dynamic routes from Cloud Router), and VPN tunnel status for the specified source and destination. It can reveal issues like missing return routes from on-premises, asymmetric routing due to policy-based VPN vs. route-based VPN, or firewall rules blocking ICMP or specific ports, which a simple ping cannot diagnose. In real-world scenarios, a VPN tunnel may be UP but routing may be broken if the on-premises network doesn't advertise the 10.1.2.0/24 subnet via BGP or if Cloud Router has no learned route.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this ACE question test?
Ensuring successful operation of a cloud solution — This question tests Ensuring successful operation of a cloud solution — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Network Intelligence Center Connectivity Tests to analyze the path from the VM to the on-premises IP. — B is correct because Network Intelligence Center Connectivity Tests can analyze the path from a specific source (the Compute Engine VM) to a destination (the on-premises server IP 10.1.2.3) across hybrid connectivity like Cloud VPN. It validates routing, firewall rules, and tunnel health without requiring you to SSH into the VM or run live traffic, making it ideal for diagnosing routing issues when the VPN tunnel is UP but connectivity is uncertain.
What should I do if I get this ACE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
This ACE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ACE exam.
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